EP 0646215 B1 19991020 - METHOD AND APPARATUS FOR PRESSURE, VOLUME, AND TEMPERATURE MEASUREMENT AND CHARACTERIZATION OF SUBSURFACE FORMATIONS
Title (en)
METHOD AND APPARATUS FOR PRESSURE, VOLUME, AND TEMPERATURE MEASUREMENT AND CHARACTERIZATION OF SUBSURFACE FORMATIONS
Title (de)
VERFAHREN UND VORRICHTUNG FÜR DRUCK-, VOLUMEN UND TEMPERATURMESSUNGEN UND ZUR CHARAKTERISIERUNG VON UNTERTÄGIGEN FORMATIONEN
Title (fr)
PROCEDE ET APPAREIL DE MESURE DE TEMPERATURE, DE PRESSION ET DE VOLUME, ET DE CARACTERISATION DE FORMATIONS SOUTERRAINES
Publication
Application
Priority
- US 9305875 W 19930618
- US 90308892 A 19920619
- US 4881493 A 19930416
Abstract (en)
[origin: WO9400671A1] A method and apparatus for conducting in situ tests on a subsurface earth formation (11) of interest which is traversed by a wellbore (10). A wireline formation testing instrument (13) is positioned at formation depth by winding or unwinding cable (12) from hoist (20), and a sampling probe (18) thereof is extended into fluid communication with the formation (11) and isolated from wellbore pressure. The sampling and measuring instrument (13) is comprised of a hydraulic power system (14), a fluid sample storage section (15) and a sampling mechanism section (16). Utilizing a hydraulically energized double-acting bidirectional piston pump and by valve controlled selection of pumping direction, testing fluid such as completion fluid may be pumped into the formation through the sampling probe either from fluid reservoirs of the instrument or from the wellbore. After reversing the operating and control valving of the pump and instrument, the piston pump is utilized to extract formation fluid from the formation (11) and pump it to sample tanks of the instrument (13), pump it to the wellbore (10) or subject it to controlled pressure for real time formation testing and for formation characterization.
IPC 1-7
IPC 8 full level
E21B 49/00 (2006.01); E21B 49/10 (2006.01); G01N 7/14 (2006.01); G01N 33/28 (2006.01)
CPC (source: EP)
E21B 23/06 (2013.01); E21B 49/008 (2013.01); E21B 49/10 (2013.01); G01N 7/14 (2013.01); G01N 33/2823 (2013.01)
Designated contracting state (EPC)
FR GB NL
DOCDB simple family (publication)
WO 9400671 A1 19940106; AU 4641693 A 19940124; CA 2138134 A1 19940106; CA 2138134 C 20031125; EP 0646215 A1 19950405; EP 0646215 A4 19971210; EP 0646215 B1 19991020; NO 20035039 D0 20031113; NO 20035039 L 19950220; NO 327286 B1 20090602
DOCDB simple family (application)
US 9305875 W 19930618; AU 4641693 A 19930618; CA 2138134 A 19930618; EP 93916625 A 19930618; NO 20035039 A 20031113